// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database()

// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()

  return db.collection('bills').doc(event.bill_id).get().then(res => {
    return {
      code: 1,
      data: res.data
    }
  }).catch(reson => {
    return {
      code: -1,
      errorMsg: reson.errorMsg
    }
  })
}